景安快云服务器管理平台创建备份后有时可能导致硬盘脱机，这个要如何处理呢？几行命令就可以搞定！使用DISKPART.exe命令 解除策略
1.运行：cmd
2.输入：DISKPART.exe
3.DISKPART> san
4.DISKPART> san policy=onlineall
5.DISKPART>list disk
6.DISKPART> select disk 1
7.DISKPART>attributes disk clear readonly
8.DISKPART>online disk
附解决方案英文描述：
open a command prompt and type “diskpart.exe”.
You will now receive a diskpart-prompt: Diskpart> Now type “san”. This will provide you with the current configured SAN policy: SAN Policy : Offline Shared In the diskpart-prompt, type “san policy=OnlineAll”. This will result in the following message: Diskpart successfully changed the SAN policy for the current operating system. Now type “list disk”, which will give this message: Disk ### Status Size Free Dyn Gpt Disk 0 Online 30 GB 0 B Disk 1 Offline 50 GB 1024 KB In my case, disk 1 was offline so I typed “select disk 1” which provided: Disk 1 is now the selected disk Now type “attributes disk clear readonly”. Disk attributes cleared successfully. And to check if all the settings are now correct, type “attributes disk”. This will give an output something like: Current Read-only State : No Read-only : No Boot Disk : No Pagefile Disk : No Hibernation File Disk : No Crashdump Disk : No Clustered Disk : No After the last check has been successful, type “online disk” to bring the disk online.
